Highly effective and uniform SERS substrates fabricated by etching   multi-layered gold nanoparticle arrays

doi:10.1039/c6nr00502k

CORC > 北京大学 > 信息科学技术学院

	Highly effective and uniform SERS substrates fabricated by etching multi-layered gold nanoparticle arrays
	Zhang, Li ; Guan, Changrong ; Wang, Ying ; Liao, Jianhui
刊名	NANOSCALE
	2016
关键词	ENHANCED RAMAN-SPECTROSCOPY SCATTERING SERS HOT-SPOTS LOW-COST SILVER NANOSTRUCTURES CHIPS
DOI	10.1039/c6nr00502k
英文摘要	Gold nanoparticle multilayers printed on silicon substrates layer by layer were etched by a gold etchant to form highly effective and uniform substrates for surface-enhanced Raman scattering (SERS). The performance of the SERS substrates was systematically studied by adjusting the number of nanoparticle layers and the etching time. The optimized enhancement factor (EF) and the detection limit of the substrates were determined to be 8.6 x 10(6) and 1 x 10(-12) M, respectively. The high EF and low detection limit were attributed to the high density of "hot-spots" and the facile accession of probe molecules to these spots. Moreover, the SERS substrates exhibited a nice uniformity with a small spot-to-spot variation and a good sample-to-sample reproducibility as well. The experimental results were supported by finite-difference time domain (FDTD) simulations. Our study suggests that low-cost, large-scale, and uniform SERS substrates with a high EF and low detection limit can be achieved by using bottom-up chemical methods.; National Natural Science Foundation of China [21573014]; Ministry of Science and Technology of the People's Republic of China [2012CB932702]; SCI(E); EI; PubMed; ARTICLE; Jianhui.Liao@pku.edu.cn; 11; 5928-5937; 8
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/434763]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Zhang, Li,Guan, Changrong,Wang, Ying,et al. Highly effective and uniform SERS substrates fabricated by etching multi-layered gold nanoparticle arrays[J]. NANOSCALE,2016.
APA	Zhang, Li,Guan, Changrong,Wang, Ying,&Liao, Jianhui.(2016).Highly effective and uniform SERS substrates fabricated by etching multi-layered gold nanoparticle arrays.NANOSCALE.
MLA	Zhang, Li,et al."Highly effective and uniform SERS substrates fabricated by etching multi-layered gold nanoparticle arrays".NANOSCALE (2016).